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https://issues.apache.org/activemq/browse/AMQCPP-166?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=41242#action_41242
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Timothy Bish commented on AMQCPP-166:
-------------------------------------

I've run the same tests in windows with a VC2005 build and again had no issues.

> MapMessage does not send mapped fields
> --------------------------------------
>
>                 Key: AMQCPP-166
>                 URL: https://issues.apache.org/activemq/browse/AMQCPP-166
>             Project: ActiveMQ C++ Client
>          Issue Type: Bug
>          Components: Openwire
>    Affects Versions: 2.1.3
>         Environment: 32-bit XP client with client compiled under VS 2005, 
> ActiveMQ v5.0 is running on a 32-bit Windows 2003 server.
>            Reporter: Thomas Johnson
>            Assignee: Timothy Bish
>
> Modified the vs2005-activemq-example's HelloWorldProducer to use a map 
> message:
>                               MapMessage *message=session->createMapMessage();
>                               message->setInt("MsgNum",ix);
>                               
> message->setString("Thread",threadIdStr.c_str());
>                 producer->send( message );
> and the HelloWorldConsumer to receive it:
>                       const MapMessage * mapMessage=
>                               dynamic_cast<const MapMessage *>(message);
>                       if (mapMessage!=NULL) {
>                               int num=mapMessage->getInt("MsgNum");
>                               printf("Msg #%d from thread 
> %s\n",num,mapMessage->getString("Thread").c_str());
>                       } else {
>                               printf("Not a map message\n");
>                       }
> The getInt with Msgnum throw a field not in map exception.   After closer 
> inspection, the map was empty.   Also, while not an expert in the code, but I 
> tried tracing it through the producer->send and as far as I could tell, the 
> map was never marshalled.

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